Rounding in MS Access

Question

Whats the best way to round in VBA Access?

My current method utilizes the Excel method

Excel.WorksheetFunction.Round(...

But I am l

Answer 1

To solve the problem of penny splits not adding up to the amount that they were originally split from, I created a user defined function.

Function PennySplitR(amount As Double, Optional splitRange As Variant, Optional index As Integer = 0, Optional n As Integer = 0, Optional flip As Boolean = False) As Double
' This Excel function takes either a range or an index to calculate how to "evenly" split up dollar amounts
' when each split amount must be in pennies.  The amounts might vary by a penny but the total of all the
' splits will add up to the input amount.

' Splits a dollar amount up either over a range or by index
' Example for passing a range: set range $I$18:$K$21 to =PennySplitR($E$15,$I$18:$K$21) where $E$15 is the amount and $I$18:$K$21 is the range
'                              it is intended that the element calling this function will be in the range
' or to use an index and total items instead of a range: =PennySplitR($E$15,,index,N)
' The flip argument is to swap rows and columns in calculating the index for the element in the range.

' Thanks to: http://stackoverflow.com/questions/5559279/excel-cell-from-which-a-function-is-called for the application.caller.row hint.
Dim evenSplit As Double, spCols As Integer, spRows As Integer
If (index = 0 Or n = 0) Then
    spRows = splitRange.Rows.count
    spCols = splitRange.Columns.count
    n = spCols * spRows
    If (flip = False) Then
       index = (Application.Caller.Row - splitRange.Cells.Row) * spCols + Application.Caller.Column - splitRange.Cells.Column + 1
     Else
       index = (Application.Caller.Column - splitRange.Cells.Column) * spRows + Application.Caller.Row - splitRange.Cells.Row + 1
    End If
 End If
 If (n < 1) Then
    PennySplitR = 0
    Return
 Else
    evenSplit = amount / n
    If (index = 1) Then
            PennySplitR = Round(evenSplit, 2)
        Else
            PennySplitR = Round(evenSplit * index, 2) - Round(evenSplit * (index - 1), 2)
    End If
End If
End Function